nanocore | de618fb2a376e986af7a45aa15f4e9bf5a99a0cedd696e99c15210b2e29a673d

Analysis

max time kernel
86s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2023, 12:41

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General

Target
b0c7a7b1906f09f91832fde3516a42dc.exe
Size 932KB
Sample230126-pwsfbafa4z
SHA256 de618fb2a376e986af7a45aa15f4e9bf5a99a0cedd696e99c15210b2e29a673d
MD5 b0c7a7b1906f09f91832fde3516a42dc
SHA1 4aeff52d336bf539145c4b70a2c38589fe6168a5
SHA512 af1b0e3d8012dce4f8e66019c0598766167d471cdb0ded24aa070ed55db1ffd7abdfbfd5c276a35b7b1c49fec3368fc1c9492b8b5ad7477f00b47feddc560632
SSDEEP 12288:YtG7vV5zxPCRgh1/ZWkXD+FqIGbyr1W89rqfw2Dn+Sp2/iOQJ/ze5hHThHwZE4ny:gBGerNxqI2bHZS5xuhqVWs
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

tzitziklishop.ddns.net:1665
127.0.0.1:1665

Mutex

be28fce4-4930-4ffe-96ed-0110cf99b889

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-11-05T12:54:30.362923036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1665
default_group
SecureKMT
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
be28fce4-4930-4ffe-96ed-0110cf99b889
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
tzitziklishop.ddns.net
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UPNP Monitor = "C:\\Program Files (x86)\\UPNP Monitor\\upnpmon.exe"	b0c7a7b1906f09f91832fde3516a42dc.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b0c7a7b1906f09f91832fde3516a42dc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4728 set thread context of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\UPNP Monitor\upnpmon.exe	b0c7a7b1906f09f91832fde3516a42dc.exe
File created	C:\Program Files (x86)\UPNP Monitor\upnpmon.exe	b0c7a7b1906f09f91832fde3516a42dc.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4080	schtasks.exe
3508	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3432	b0c7a7b1906f09f91832fde3516a42dc.exe
3432	b0c7a7b1906f09f91832fde3516a42dc.exe
3432	b0c7a7b1906f09f91832fde3516a42dc.exe
3432	b0c7a7b1906f09f91832fde3516a42dc.exe
3432	b0c7a7b1906f09f91832fde3516a42dc.exe
3432	b0c7a7b1906f09f91832fde3516a42dc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3432	b0c7a7b1906f09f91832fde3516a42dc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3432	b0c7a7b1906f09f91832fde3516a42dc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 4728 wrote to memory of 3432	4728	b0c7a7b1906f09f91832fde3516a42dc.exe	88
PID 3432 wrote to memory of 4080	3432	b0c7a7b1906f09f91832fde3516a42dc.exe	89
PID 3432 wrote to memory of 4080	3432	b0c7a7b1906f09f91832fde3516a42dc.exe	89
PID 3432 wrote to memory of 4080	3432	b0c7a7b1906f09f91832fde3516a42dc.exe	89
PID 3432 wrote to memory of 3508	3432	b0c7a7b1906f09f91832fde3516a42dc.exe	91
PID 3432 wrote to memory of 3508	3432	b0c7a7b1906f09f91832fde3516a42dc.exe	91
PID 3432 wrote to memory of 3508	3432	b0c7a7b1906f09f91832fde3516a42dc.exe	91

C:\Users\Admin\AppData\Local\Temp\b0c7a7b1906f09f91832fde3516a42dc.exe
"C:\Users\Admin\AppData\Local\Temp\b0c7a7b1906f09f91832fde3516a42dc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Users\Admin\AppData\Local\Temp\b0c7a7b1906f09f91832fde3516a42dc.exe
  "C:\Users\Admin\AppData\Local\Temp\b0c7a7b1906f09f91832fde3516a42dc.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UPNP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp13D6.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4080
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UPNP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1483.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3508

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

b0c7a7b1906f09f91832fde3516a42dc.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b0c7a7b1906f09f91832fde3516a42dc.exe.log
Size 1KB
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
MD5 SHA1 SHA512

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tmp13D6.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp13D6.tmp
Size 1KB
SHA256 126fe1c0b71879b11c5b198c32ace4cadc0670d250fb3bb6b33eeeb94b51ddd6
MD5 cf47491d454d8f08bb0a0fec2967d09b
SHA1 5e2bbd4bb8bff0c4a075c45d95c23e69be1116bf
SHA512 18c5d5d43d977658486826e5bff30dcc8cc02a2663a78e29d1428e20e931d3e28088ad72f5f23cffea6e98216ec20ca1dff2c060938539c5130e26c9932a6db0
MD5 SHA1 SHA512

Submit Download

tmp1483.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1483.tmp
Size 1KB
SHA256 21d669a674eb23538f38f6822429d797e69e0685d18c0e6e03ec6801098b240a
MD5 c9a4c783d2e18eea86e071de92f36f02
SHA1 4cb02db05386ccb70a23fa89dbadfddfc8f7b6af
SHA512 b6d5198d9ca83687fcc491c02ad8b417e02dff0150b514c3d39d13b8de9ffba6f3779ee7bb6350b087474fb6e0d1bd10b8fdd5c8f48a46c9cfd183d9045b80ef
MD5 SHA1 SHA512

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memory/3432-138-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3432-144-0x0000000006940000-0x00000000069A6000-memory.dmp

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memory/4728-136-0x0000000005FB0000-0x000000000604C000-memory.dmp

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memory/4728-132-0x0000000000990000-0x0000000000A80000-memory.dmp

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memory/4728-135-0x00000000053D0000-0x00000000053DA000-memory.dmp

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memory/4728-134-0x00000000052F0000-0x0000000005382000-memory.dmp

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memory/4728-133-0x0000000005800000-0x0000000005DA4000-memory.dmp

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